My LPC 2148 stopped working

We bought the MCB2140 board which has a LPC2148 controller chip on it. It worked very well for several months and it worked well last Thursday. This Monday, it stopped working… I can download program to it, but it seems that the cpu never executes the program. In my testing, I just tried to turn off the leds because they were on all the time. But it still didn’t work. Previously, I could blink the leds with no problem.

Does anyone have met this kind of problem before?

Thank you so much!

I found the problem. I used too much memory and that caused problem. Now it’s OK …